
/************************************************************************************
*                                                                                   *
*   Copyright (c) 2024 Xiaoqiang <username_nullptr@163.com>                         *
*                                                                                   *
*   This file is part of LIBGS3                                                       *
*   License: MIT License                                                            *
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#ifndef LIBGS_CORE_CXX_DETAIL_OPERATOR_H
#define LIBGS_CORE_CXX_DETAIL_OPERATOR_H

namespace libgs
{

bool equality(concepts::arithmetic_p auto a, concepts::arithmetic_p auto b)
{
	if constexpr( is_float_v<decltype(a)> or is_float_v<decltype(b)> )
	{
		auto e = std::abs(a - b) ;
		return e < std::numeric_limits<decltype(e)>::epsilon();
	}
	else
		return a == b;
}

bool nequality(concepts::arithmetic_p auto a, concepts::arithmetic_p auto b)
{
	return not equality(a,b);
}

bool equal_greater(concepts::arithmetic_p auto a, concepts::arithmetic_p auto b)
{
	return a > b or equality(a,b);
}

bool equal_less(concepts::arithmetic_p auto a, concepts::arithmetic_p auto b)
{
	return a < b or equality(a,b);
}

} //namespace libgs

[[nodiscard]] bool operator==(libgs::concepts::arithmetic_p auto a, libgs::concepts::arithmetic_p auto b)
{
	if constexpr( libgs::is_float_v<decltype(a)> or libgs::is_float_v<decltype(b)> )
	{
		auto e = std::abs(a - b) ;
		return e < std::numeric_limits<decltype(e)>::epsilon();
	}
	else
		return a == b;
}

[[nodiscard]] bool operator!=(libgs::concepts::arithmetic_p auto a, libgs::concepts::arithmetic_p auto b)
{
	return not libgs::equality(a,b);
}

[[nodiscard]] bool operator>=(libgs::concepts::arithmetic_p auto a, libgs::concepts::arithmetic_p auto b)
{
	return a > b or libgs::equality(a,b);
}

[[nodiscard]] bool operator<=(libgs::concepts::arithmetic_p auto a, libgs::concepts::arithmetic_p auto b)
{
	return a < b or libgs::equality(a,b);
}


#endif //LIBGS_CORE_CXX_DETAIL_OPERATOR_H